Angle Grinder Wheel Diameter 2 1/2 in Horsepower 0.4 hp For Wheel Type Type 27 Max Speed 12 000 RPM Air Inlet 1/4 in NPT Female Air Inlet Connection Size 1/4 in Air Inlet Gender Female Air Inlet Type NPT Lever Type Lever Spindle Thread Size 3/8 in Reach Standard Reach Duty Heavy Duty Variable Speed No